GB625098A - Improvements in or relating to the production of trifluoroacetic acid - Google Patents
Improvements in or relating to the production of trifluoroacetic acidInfo
- Publication number
- GB625098A GB625098A GB2548245A GB2548245A GB625098A GB 625098 A GB625098 A GB 625098A GB 2548245 A GB2548245 A GB 2548245A GB 2548245 A GB2548245 A GB 2548245A GB 625098 A GB625098 A GB 625098A
- Authority
- GB
- United Kingdom
- Prior art keywords
- trifluoroacetic acid
- acid
- potassium
- aminobenzotrifluoride
- permanganate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/16—Preparation of carboxylic acids or their salts, halides or anhydrides by oxidation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
Trifluoroacetic acid is prepared by reacting m-aminobenzotrifluoride with a permanganate of an alkali or alkaline earth metal dissolved in aqueous acetic and/or trifluoroacetic acid, preferably containing 35-45 per cent by weight of water. The use of aqueous trifluoroacetic acid is preferred since recovery of the product is thereby simplified. The preferred temperature is 80-100 DEG C. Permanganates instanced are those of potassium and barium. The acid is isolated as an alkali metal salt and obtained therefrom by, e.g. steam distillation from an acid medium. In an example m-aminobenzotrifluoride in aqueous acetic acid is heated under reflux at 80-90 DEG C. and solid potassium permanganate added in small portions, the reaction product is diluted with water, made alkaline with caustic soda, and boiled with additional potassium permanganate to remove impurities, trifluoroacetic acid being recovered as its potassium salt from the mixed acetates and trifluoroacetates obtained after the removal of the impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2548245A GB625098A (en) | 1945-10-01 | 1945-10-01 | Improvements in or relating to the production of trifluoroacetic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB2548245A GB625098A (en) | 1945-10-01 | 1945-10-01 | Improvements in or relating to the production of trifluoroacetic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB625098A true GB625098A (en) | 1949-06-22 |
Family
ID=10228415
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB2548245A Expired GB625098A (en) | 1945-10-01 | 1945-10-01 | Improvements in or relating to the production of trifluoroacetic acid |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB625098A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816845A (en) * | 2021-10-14 | 2021-12-21 | 常熟三爱富中昊化工新材料有限公司 | Preparation method of trifluoroacetic acid |
-
1945
- 1945-10-01 GB GB2548245A patent/GB625098A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113816845A (en) * | 2021-10-14 | 2021-12-21 | 常熟三爱富中昊化工新材料有限公司 | Preparation method of trifluoroacetic acid |
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